Answer & Solution
Answer: Option C
Solution:
To avoid issues with hoisting and the TDZ, declare variables with let or const and avoid accessing them before their declaration.
Q
How can you avoid issues related to hoisting and TDZ in JavaScript?
Related Questions on Average
What happens if you declare a const variable with the same name as an existing variable in JavaScript?
A). A. SyntaxError is thrown
B). B. The existing variable is reassigned
C). C. ReferenceError is thrown
D). D. TypeError is thrown
What is the purpose of the Temporal Dead Zone (TDZ) in JavaScript?
A). A. To prevent variable reassignment
B). B. To catch errors at compile time
C). C. To ensure variables are initialized before use
D). D. To reduce memory usage
What happens if you access a var variable before its declaration in JavaScript?
A). A. ReferenceError
B). B. TypeError
C). C. undefined
D). D. No error
How can you ensure that a const variable is initialized before use in JavaScript?
A). A. Use let instead of const for all variables
B). B. Declare const variables at the top of their scope
C). C. Assign a default value to const variables
D). D. None of the above
Which of the following is true about const variables in JavaScript?
A). A. They can be reassigned after declaration
B). B. They can be accessed before declaration
C). C. They cannot be declared without an initial value
D). D. They cannot be hoisted
What is the behavior of accessing a const variable within a function before its declaration in JavaScript?
A). A. ReferenceError is thrown
B). B. SyntaxError is thrown
C). C. undefined is printed
D). D. No error
How does hoisting affect function declarations in JavaScript?
A). A. Function declarations are hoisted with their function bodies
B). B. Function declarations are hoisted but cannot be accessed before declaration
C). C. Function declarations are not hoisted
D). D. Hoisting has no effect on function declarations
Which keyword allows hoisting of variables in JavaScript?
A). A. var
B). B. let
C). C. const
D). D. Both A and B
How does hoisting affect arrow functions in JavaScript?
A). A. Arrow functions are hoisted with their function bodies
B). B. Arrow functions are hoisted but cannot be accessed before declaration
C). C. Arrow functions are not hoisted
D). D. Hoisting has no effect on arrow functions
How does hoisting affect const declarations in JavaScript?
A). A. const variables are hoisted with their initial values
B). B. const variables are hoisted but cannot be accessed before declaration
C). C. const variables are hoisted and can be accessed before declaration
D). D. Hoisting does not affect const declarations